28126403786 has 16 divisors (see below), whose sum is σ = 45452685600. Its totient is φ = 12976352688.

The previous prime is 28126403777. The next prime is 28126403791. The reversal of 28126403786 is 68730462182.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28126403786.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142676 + ... + 276783.

It is an arithmetic number, because the mean of its divisors is an integer number (2840792850).

Almost surely, 2^28126403786 is an apocalyptic number.

28126403786 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28126403786 is a deficient number, since it is larger than the sum of its proper divisors (17326281814).

28126403786 is a wasteful number, since it uses less digits than its factorization.

28126403786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422053.

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 28126403786 in words is "twenty-eight billion, one hundred twenty-six million, four hundred three thousand, seven hundred eighty-six".